look at this strange egg from exbattery

[j.a.m poultry]

2 exbattery hens I saved last year jus started laying an the 1st 2 eggs are like this. Does any 1 know y this is?

 

[Marigold]

It looks a bit misshapen perhaps, but from the photo it doesn't appear very weird to me. If its from an exbatt you've had since last year, she must be getting on a bit and as she comes towards the end of her lay you would probably expect some strange eggs of one sort or another. What's the shell quality like?